Pros: Personable, quite, great with other birds
Cons: Not the best layers, they're BIG
I only have 1 standard Brahma (and 3 Bantams Brahmas) and she is amazing. She is VERY laid back, not flighty in any way and VERY personable. She will follow us around the yard just so she can see what we're doing whether we have treats or not.
I introduced my Brahma (and my 3 bantams) to my existing "flock" of 2 orpingtons. My standard had no issue becoming part of the flock, she was close to their size when she was introduced and she is laid back enough that she just went off and did her own thing when my orpingtons decide to get grumpy. Within 2 or 3 days my brahma was up and roosting between them without any problem.
My Brahma even hangs out with my 2 year old daughter. My bantams are the same way. I wish I had more of them. (and I probably will soon). I love my orpingtons, but if I could start my flock over, I would have gotten all Brahmas.